package com.example.demo.aop;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;

@Aspect //切面
@Component
public class UserAspect {
    /**
     * 切点（配置拦截规则）
     */
    @Pointcut("execution(* com.example.demo.controller.UserController.*(..))")
    public void pointcut(){
    }

    @Before("pointcut()")
    public void beforeAdvice(){
        System.out.println("执行了前置通知~");
    }

    @After("pointcut()")
    public void afterAdvice(){
        System.out.println("执行了后置通知~");
    }

    @Around("pointcut()")
    public Object aroundAdvice(ProceedingJoinPoint joinPoint) throws Throwable {
        System.out.println("进入环绕通知了~");
        //执行目标方法
        Object o=null;
        o=joinPoint.proceed();
        System.out.println("退出环绕通知了~");
        return o;

    }

}
